Home / 828,142.60-1,242,213.90-576,200.20

Finding the Fourth Proportional to 828,142.60, 1,242,213.90 and 576,200.20

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Solution

The fourth proportional to 828,142.60, 1,242,213.90 and 576,200.20 is: 864,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,142.60 : 1,242,213.90 = 576,200.20 : x
  2. Step 2: Convert to fraction form
    828,142.60/1,242,213.90 = 576,200.20/x
  3. Step 3: Cross multiply
    828,142.60x = 1,242,213.90 × 576,200.20
  4. Step 4: Simplify right side
    828,142.60x = 715,763,897,622.78
  5. Step 5: Solve for x
    x = 715,763,897,622.78/828,142.60
  6. Step 6: Final answer
    x = 864,300.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.